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You searched for: subject:"photons"
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[movies]James spinning photons
james spinning photons to DJ Paul Oakenfold live at the lizard lounge in Dallas, TX
Keywords: lights; photons; dj
Downloads: 790 5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars(1 review)
[texts]Total photon absorption cross section measurements, theoretical analysis and evaluations for energies above 10 MeV (Volume NBS Technical Note 968) - Gimm, H. A.; Hubbell, J. H.

Keywords: Photons; Photonuclear reactions; Absorption
Downloads: 62
[movies]Photonz Live at ChuckECheeze
This was a live edit from Darby of the Photonz playing one of their earlier shows at Chuck E. Cheese. I'm not sure about the year on this. This was a birthday party, and there is a spankin' good time!
Keywords: GTV; Darby; Photons; Live; Bluegrass; Rock; Party
Downloads: 592 5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars(1 review)
[texts]Multi-modal virtual environment research at Armstrong Laboratory - Eggleston, Robert G
One mission of the Paul M. Fitts Human Engineering Division of Armstrong Laboratory is to improve the user interface for complex systems through user-centered exploratory development and research activities. In support of this goal, many current projects attempt to advance and exploit user-interface concepts made possible by virtual reality (VR) technologies. Virtual environments may be used as a general purpose interface medium, an alternative display/control method, a data visualization and an...
Keywords: PHOTONS; NORMAL DENSITY FUNCTIONS; NONLINEARITY; CAVITIES
Downloads: 95
[movies]Photons of Light - Episode 002 - Dr. Matt J. Carlson
The particle nature of light is explained in this simple demonstration that light comes in little packets called photons.
Keywords: chemistry; physics; light; photons; science; education
Downloads: 542
[texts]Crack propagation studies to determine benign or catastrophic failure modes for aerospace thin-rim gears - Lewicki, David G
Analytical and experimental studies were performed to investigate the effect of rim thickness on gear tooth crack propagation. The goal was to determine whether cracks grew through gear teeth (benign failure mode) or through gear rims (catastrophic failure mode) for various rim thicknesses. Gear tooth crack propagation was simulated using a finite element based computer program. Principles of linear elastic fracture mechanics were used...
Keywords: PHOTONS; ELECTROMAGNETIC FIELDS; VACUUM; CAVITIES; NONLINEARITY
Downloads: 236
[audio][nnnl.17] Antendex - Photons
Thanks for visiting! Unfortunately the release is not available any more on NNNL. Please check the RELEASE PAGE for new infos!
Keywords: antendex; photons; nnnl.17, experimental; ambient; nnnl.hu
Downloads: 822
[texts]Coordination of human upper arm and forearm motion in rapid extensions - Nahvi, Mahmoo
In many movements of the upper limb such as reaching, positioning, and displacing the objects, the hand moves smoothly along a uni-directional planar trajectory with a bell-shaped speed profile. Because of variability of the load, gravitational and velocity interaction forces between its segments, the dynamics of the arm during the motion is very complex. Motion of the upper arm and the forearm are coordinated to produce smooth movements despite such complex dynamics...
Keywords: MATHEMATICAL MODELS; PHOTOMETERS; QUANTUM THEORY; PHOTONS; PROBABILITY THEORY
Downloads: 28
[texts]Telerobotic remote presence: Achievements and challenges - Aviles, Walter A
The topics discussed include the following: telepresence, telerobotics, teleoperators, man machine systems, robot control, and remote control.
Keywords: DOWN-CONVERTERS; IDENTIFYING; INTERFEROMETERS; PHOTONS; TIME DEPENDENCE; CAVITIES; IDLERS; SELECTION
Downloads: 20
[texts]Models of remote manipulation in space - Hannaford, Blak
Robots involved in high value manipulation must be effectively coupled to a human operator either at the work-site or remotely connected via communication links. In order to make use of experimental performance evaluation data, models must be developed. Powerful models of remote manipulation by humans can be used to predict manipulation performance in future systems based on today's laboratory systems...
Keywords: AMPLIFICATION; COHERENT LIGHT; OSCILLATORS; PHOTONS; BEAM SPLITTERS; WIGNER COEFFICIENT
Downloads: 67
[texts]The two-photon laser - Ilinova, T. M
Resonance curves for excitation of stationary oscillations, and two photon laser study
Keywords: EXCITATION; LASERS; OSCILLATIONS; PHOTONS; RESONANCE; LASER; OSCILLATION; PHOTON; RESONANCE
Downloads: 98
[texts]Effect of tips of wings moving at supersonic speed - Krasilshchilova, E. A
No Abstract Available
Keywords: ATOMS; LIGHT EMISSION; NUCLEONS; PHOTONS; PROTONS; ELECTRONS; NUCLEAR PHYSICS
Downloads: 84
[texts]Space vehicle thermal rejection system - NON
A space vehicle thermal heat rejection system 10 utilizing separate optimized heat pipe components for the functions of heat acquisition, heat transport, and heat rejection. A honeycomb panel heat pipe evaporator section 20 performs the function of heat acquisition, and forms a closed thermodynamic system with a dual channel heat pipe transport section 30, which performs the function of heat transport...
Keywords: HIGH SPEED CAMERAS; IMAGING TECHNIQUES; NUCLEAR MEDICINE; PHOTONS; PATENTS
Downloads: 101
[texts]Non-linear resonance of fluids in a crystal growth cavity - Wang, Francis C
In the microgravity environment, the effect of gravity on fluid motion is much reduced. Hence, secondary effects such as vibrations, jitters, surface tension, capillary effects, and electromagnetic forces become the dominant mechanism of fluid convection. Numerous studies have been conducted to investigate fluid behavior in microgravity with the ultimate goal of developing processes with minimal influence from convection...
Keywords: HAMILTONIAN FUNCTIONS; RADIATION DISTRIBUTION; RAMAN SPECTRA; DEGENERATION; PHOTONS
Downloads: 83
[texts]Comparison of theoretical and experimental photoeffect data 0.1 keV to 1.5 MeV (Volume NBS Technical Note 901) - Hubbell, John Howard; Veigele, Wm. J.

Keywords: Photoelectricity; X-rays; Gamma rays; Photons; Cross sections (Nuclear physics)
Downloads: 48
[texts]Three-D CFD analysis of hydrostatic bearings - Lin, Shyi-Jang
The hydrostatic bearing promises life and speed characteristics currently unachievable with rolling element bearings alone. In order to achieve the speed and life requirements of the next generation of rocket engines, turbopump manufacturers are proposing hydrostatic bearings to be used in place of, or in series with, rolling element bearings. The design of a hydrostatic bearing is dependent on accurate pressure in the bearing...
Keywords: COMPRESSING; COUNTING; DEFORMATION; LASERS; PHOTONS; SELECTION; COMMUTATION; HAMILTONIAN FUNCTIONS
Downloads: 143
[audio]World of the Fifth Sun: Earth changes - Carlos Barrios
THE WORLD WILL NOT END IN 2012 Carlos Barrios was born into a Spanish family on El Altiplano, the highlands of . His home was in Huehue tenango, also the dwelling place of the Maya Mam tribe. With other Maya and other indigenous tradition keepers, the Mam carry part of the old ways on Turtle Island ( North America ). They are keepers of time, authorities on remarkable calendars that are ancient, elegant and relevant...
Keywords: Barrios; mayan; 2012; 2013; prophecy; ascension; photons; prana; church
Downloads: 391
[texts]SCREENING OF ANTINUCLEAR FACTORS IN RHEUMATIC DISEASES - MENARD, H. A.
EXPERIENCE WITH A SCREENING METHOD FOR ANTINUCLEAR ANTIBODIES WHICH USES INDIRECT IMMUNOFLUORESCENCE ON FORMALINIZED CHICKEN RED CELLS NUCLEI AS SUBSTRATE IS DISCUSSED. THE METHOD IS INEXPENSIVE, EASY TO STANDARDIZE, EASY TO PERFORM, AND PRESENTS A SENSITIVITY AND SPECIFICITY COMPARABLE TO CLASSICAL METHODS. SERA AND SYNOVIAL FLUIDS FROM PATIENTS WITH RHEUMATIC DISEASES WERE SCREENED. A DISCUSSION OF THE TECHNICAL ASPECTS AND THE CLINICAL APPLICATIONS IS INCLUDED.
Keywords: ANNIHILATION REACTIONS; OSO-7; COSMIC RAYS; GAMMA RAYS; PHOTONS; POSITRONS
Downloads: 93
[texts]A facility to produce an energetic, ground state atomic oxygen beam for the simulation of the Low-Earth Orbit environment - Ketsdever, Andrew D.
Because of the continuing commitment to activity in low-Earth orbit (LEO), a facility is under development to produce energetic atmospheric species, particularly atomic oxygen, with energies ranging from 5 to 80 eV. This relatively high flux facility incorporates an ion engine to produce the corresponding specie ion which is charge exchanged to produce a neutral atomic beam. Ion fluxes of around 10(exp 15) sec(exp -1) with energies of 20-70 eV have been achieved...
Keywords: PHOTONS; QUANTUM MECHANICS; BEAM SPLITTERS; INTERFERENCE; INTERFEROMETRY; PARADOXES
Downloads: 102
[texts]Possible interpretation of isotropic gamma-ray observations - NON
Cosmic, isotropic gamma ray spectra, primordial gamma ray sources, and intergalatic gas density
Keywords: ANNIHILATION REACTIONS; ANTIPROTONS; GAMMA RAYS; PROTONS; COSMIC RAYS; PHOTONS
Downloads: 124
[texts]Design and experimental evaluation of a turbopump lift-off seal Final report - Ritter, J. A
Hydrostatic life-off seal zero leakage and static sealing and rubbing tests for use in liquid hydrogen turbine pumps
Keywords: COSMOLOGY; GAMMA RAYS; INTERGALACTIC MEDIA; LIGHT SOURCES; PHOTONS; X RAYS
Downloads: 177
[texts]The search for materials to mitigate spacecraft charging - Losure, Nancy S
As spacecraft orbit the earth, they encounter a variety of particles and radiation. Charged particles are common enough that a spacecraft can collect substantial charges on its surfaces. If these charges are not bled off, they can accumulate until electrostatic discharges occur between a charged surface and some lower-potential location on the craft. Electrostatic discharge (ESD) is the suspected culprit in a number of spacecraft failures...
Keywords: PHOTONS; POLARIZATION (CHARGE SEPARATION); DIPOLES; ROTATION; ATOMS; TRAPPING
Downloads: 95
[texts]Relativistic Quantum Theory part 1 - V.B. Berestetskii, E.M. Lifshitz & L.P. Pitaevskii
V.B. Berestetskii, E.M. Lifshitz & L.P. Pitaevskii Relativistic Quantum Theory ( Volume 4 part 1 of A Course of Theoretical Physics ) Pergamon Press 1971 Acrobat 7 Pdf 19.0 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Physics; Photons; Bosons; Fermions; Scattering Matrix; Perturbation Theory; Interactions; Landau
Downloads: 4,496
[texts]Theory of Photons & Electrons - J.M. Jauch & F. Rohrlich
J.M. Jauch & F. Rohrlich Theory of Photons & Electrons Addison-Wesley 1955 Acrobat 7 Pdf 20.7 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Radiation; Photons; S-Matrix; Divergence; Renormalisation; Positronium; Quantum; Electrodynamics
Downloads: 1,259
[texts]Simulation of Shuttle launch G forces and acoustic loads using the NASA Ames Research Center 20G centrifuge - Shaw, T. L.
The high cost and long times required to develop research packages for space flight can often be offset by using ground test techniques. This paper describes a space shuttle launch and reentry simulating using the NASA Ames Research Center's 20G centrifuge facility. The combined G-forces and acoustic environment during shuttle launch and landing were simulated to evaluate the effect on a payload of laboratory rates...
Keywords: INEQUALITIES; PARADOXES; PHOTONS; QUANTUM MECHANICS; EXPERIMENTATION; INTERFERENCE; MEASUREMENT
Downloads: 264
[texts]Preliminary Thermal-Mechanical Sizing of Metallic TPS: Process Development and Sensitivity Studies - Poteet, Carl C.
The purpose of this research was to perform sensitivity studies and develop a process to perform thermal and structural analysis and sizing of the latest Metallic Thermal Protection System (TPS) developed at NASA LaRC (Langley Research Center). Metallic TPS is a key technology for reducing the cost of reusable launch vehicles (RLV), offering the combination of increased durability and competitive weights when compared to other systems...
Keywords: LASER APPLICATIONS; CONTINUOUS WAVE LASERS; PHOTONS; TARGETS; YAG LASERS; DAMAGE
Downloads: 123
[texts]Net Thermal Radiation in the Atmosphere of Venus - Revercomb, H. E.
The four entry probes of the Pioneer Venus mission measured the radiative net flux in the atmosphere of Venus at latitudes of 60 deg. N, 31 deg. S, 27 deg. S, and 4 deg. N. The three higher latitude probes carried instruments (small probe net flux radiometers; SNFR) with external sensors. The measured SNFR net fluxes are too large below the clouds, but an error source and correction scheme have been found (H...
Keywords: SOLAR FLARES; IMAGING TECHNIQUES; ASTROPHYSICS; PHOTONS; GAMMA RAYS; COLLIMATORS; ALBEDO; SPECTROSCOPY; SPATIAL RESOLUTION; POINT SOURCES
Downloads: 116
[texts]Tests of a two-photon technique for measuring polarization mode dispersion with subfemtosecond precision (Volume 104) - Dauler, Eric
Journal of Research of the National Institute of Standards and Technology
Keywords: quantum interference; coincidence; entangled photons; polarization interferometer; polarization mode dispersion (PMD)
Downloads: 51
[texts]A Model for the Limiting Piston Stroke in Vortex Ring Formation - Shariff, K
Many devices eject a mass of fluid either in one shot or periodically. Examples include heart valves and flapping wings. Often the goal is to maximize the volume of fluid moving as a coherent vortex ring away from the exit. M. Gharib (California Institute of Technology) used a piston to experimentally study fluid ejected from a pipe and found that the largest coherent mass of fluid was attained at a piston stroke (normalized by diameter) of 4 under a variety of circumstances, including different...
Keywords: FLOW CHARACTERISTICS; SPECTROSCOPY; LASER INDUCED FLUORESCENCE; ENTHALPY; LINE SPECTRA; SPECTRAL CORRELATION; PHOTONS
Downloads: 86
[texts]Extragalactic gamma rays from Compton interactions and bremsstrahlung - NON
Extragalactic gamma ray spectra from Compton interactions and bremsstrahlung production
Keywords: COSMIC RAYS; DECAY; GAMMA RAYS; HIGH ENERGY INTERACTIONS; INTERSTELLAR GAS; PHOTONS
Downloads: 143
[texts]Numerical Study of Wake Vortex Behavior in Turbulent Domains with Ambient Stratification - Switzer, George F.
A three-dimensional large eddy simulation model is used to investigate the sensitivity of ambient stratification with turbulence on the behavior of aircraft wake vortices. Modeled ambient turbulence levels range from very weak to moderate, and stratification levels range from strongly stable to unstable. The results of profound significance from this study are: 1) very little sensitivity between vortex linking time and the level of stratification, 2) the mean vortex separation remained nearly co...
Keywords: PHOTONS; LIGHT SCATTERING; NEAR FIELDS; PHYSICAL OPTICS; OPTICAL PROPERTIES; SPECTROSCOPY; CONFERENCES
Downloads: 101
[texts]Variable Stiffness Panel Structural Analyses With Material Nonlinearity and Correlation With Tests - Wu, K. Chauncey
Results from structural analyses of three tow-placed AS4/977-3 composite panels with both geometric and material nonlinearities are presented. Two of the panels have variable stiffness layups where the fiber orientation angle varies as a continuous function of location on the panel planform. One variable stiffness panel has overlapping tow bands of varying thickness, while the other has a theoretically uniform thickness...
Keywords: CENTROIDS; ACCURACY; POSITION ERRORS; GAMMA RAY BURSTS; X RAY TELESCOPES; REFINING; PHOTONS; THERMAL ENVIRONMENTS
Downloads: 99
[texts]The radius of hole teleportation and quantum teleportation is limited by Hubble sphere - Constantin Leshan
The maximal distance of hole teleportation and quantum teleportation is limited by cosmological expansion and cannot exceed the Hubble's radius (c/H0) ~ 13 billions of light years. Entanglement depends on the distance, there is ultimate, fundamental and insuperable distance for teleportation as Hubble sphere. Besides quantum teleportation is limited by anthropic barrier 1 - 100 parsec. - The radius of quantum and hole teleportation depends on speed of movement, the more speed, the more the radiu...
Keywords: Green zone; Hubble sphere; acceleration; uniform rectilinear motion; cosmological expansion; superluminal photons; human teleportation
Downloads: 69
[texts]Production of positrons bombardment of thick foils fast electrons - Bautin, A. V.
Angular distribution and outflow of photons and positrons during foil bombardment by fast electrons
Keywords: ANGULAR DISTRIBUTION; POSITRON; ELECTRON BOMBARDMENT; ELECTRONS; FOILS; PHOTONS; POSITRONS; ANGULAR DISTRIBUTION; ELECTRON BOMBARDMENT; FOIL
Downloads: 82
[texts]Calculation of wings of a form in any plane in supersonic regime - Fenain, M
No Abstract Available
Keywords: COSMOS SATELLITES; INTERPLANETARY SPACE; RADIATION MEASUREMENT; ROCKET FLIGHT; CHARGED PARTICLES; PHOTONS; SCINTILLATION COUNTERS
Downloads: 69
[texts]Mach 4 Performance of a Fixed-Geometry Hypersonic Inlet with Rectangular-to-Elliptical Shape Transition - Smart, Michael K.
Wind-tunnel testing of a hypersonic inlet with rectangular-to-elliptical shape transition has been conducted at Mach 4.0. These tests were performed to investigate the starting and back-pressure limits of this fixed-geometry inlet at conditions well below the Mach 5.7 design point. Results showed that the inlet required side spillage holes in order to self-start at Mach 4.0. Once started, the inlet generated a compression ratio of 12.6, captured almost 80% of available air and withstood a back-p...
Keywords: X RAY SPECTROSCOPY; GALACTIC CLUSTERS; LYMAN ALPHA RADIATION; CAMERAS; X RAY SPECTRA; RADII; PHOTONS
Downloads: 93
[texts]Enabling the Discovery of Recurring Anomalies in Aerospace System Problem Reports using High-Dimensional Clustering Techniques - Srivastava, Ashok, N.
This paper describes the results of a significant research and development effort conducted at NASA Ames Research Center to develop new text mining techniques to discover anomalies in free-text reports regarding system health and safety of two aerospace systems. We discuss two problems of significant importance in the aviation industry. The first problem is that of automatic anomaly discovery about an aerospace system through the analysis of tens of thousands of free-text problem reports that ar...
Keywords: GAMMA RAY BURSTS; TIME DEPENDENCE; FREQUENCIES; SIGNATURES; PHOTONS; PROTONS; ELECTRONS; TRENDS; KINETIC ENERGY
Downloads: 111
[texts]NASA Langley Airborne High Spectral Resolution Lidar Instrument Description - Harper, David B.
NASA Langley Research Center (LaRC) recently developed the LaRC Airborne High Spectral Resolution Lidar (HSRL) to make measurements of aerosol and cloud distribution and optical properties. The Airborne HSRL has undergone as series of test flights and was successfully deployed on the Megacity Initiative: Local and Global Research Observations (MILAGRO) field mission in March 2006 (see Hair et al. in these proceedings)...
Keywords: PLASMAS (PHYSICS); SURVEYS; ELECTROMAGNETIC RADIATION; PHOTONS; SEMICONDUCTORS (MATERIALS); SURFACE PROPERTIES; ARC LAMPS; PIXELS; PARTICLE ACCELERATORS
Downloads: 99
[movies]KOLOREALASKVAGUE part2 - Realaskvague
without sense , just hight colors & hot toast , see also the First , same video but abstract ambient sound without "drum" ... Bon Apetit and let's your eyes become square °.~))
Keywords: hight voltage; colours; photons; frequency; experimental; optical; music; noise; industrial; light; hypnotic
Downloads: 223
[movies]KOLOREALASKVAGUE1 First - Realaskvague
without sense , just hight colors & cold ambient toast , Bon Apetit and let's your eyes become square °.~))
Keywords: hight voltage; colours; photons; frequency; experimental; optical; music; noise; industrial; light; hypnotic; ambient; medication; music; video
Downloads: 225
[texts]Theoretical and experimental Compton scattering cross sections at 1.12 MeV in the case of strongly bound K-shell electrons (Volume 78A) - Prasad, P.N.B.
Journal of Research of the National Bureau of Standards
Keywords: Compton scattering; differential cross section; electron binding; gamma rays; K-shell; photons
Downloads: 73
[texts]Coset Codes Viewed as Terminated Convolutional Codes - Fossorier, Marc P. C.
In this paper, coset codes are considered as terminated convolutional codes. Based on this approach, three new general results are presented. First, it is shown that the iterative squaring construction can equivalently be defined from a convolutional code whose trellis terminates. This convolutional code determines a simple encoder for the coset code considered, and the state and branch labelings of the associated trellis diagram become straightforward...
Keywords: GAMMA RAY BURSTS; COSMOLOGY; GAMMA RAY OBSERVATORY; PHOTONS; ASTRONOMICAL MODELS; HOMOGENEITY; INHOMOGENEITY
Downloads: 95
[texts]Mobility of Electron in DNA Crystals by Laser Radiation - Zhang, Kaixi
The mobility of electrons in laser radiated DNA is closed to the energy transfer and energy migration of a biological molecule. Arrhenius has studied the conductivity of the electrons in a biological molecule. But his result is far from the experimental result and meanwhile the relation between some parameters in his theory and the micro-quantities in DNA is not very clear. In this paper, we propose a new phonon model of electron mobility in DNA and use Lippman-Schwinger equation and S-matrix th...
Keywords: DOWN-CONVERTERS; QUANTUM MECHANICS; QUANTUM OPTICS; PHOTONS; PHASE MATCHING; FORMALISM; CRYSTAL OPTICS; PHYSICAL OPTICS
Downloads: 87
[texts]Dorset Experiment 5 - The Study of Light Photons - Patrick Bruskiewich
The purpose of this lab is to study some properties of light photons, to learn how logarithms can be used to find a power law relationship, and to use this technique to derive the Wien Displacement Law and Stefan-Boltzmann Law. The Temperature of the Surface of the Sun will be estimated using the Wien Displacement Law. Using the Wien Displacement Law it is possible to provide a simple derivation of the Planck Expression.
Keywords: Light Photons; Wien Displacement Law; Stefan Boltzmann Law; Planck's Constant; spectrum of the sun
Downloads: 21
[texts]EFFECT OF TITANIUM, BORON AND MOLYBDENUM ON THE STRUCTURE OF AUSTENITIC 18/10 STEEL AFTER SOLUTION HEAT TREATMENT AND SENSITIZATION - BOJARSKI, Z.
AUSTENITIC STEELS TYPES OH18N9, IH18N10T, IH1810TB AND IH18N10MT MANUFACTURED IN POLAND AND IMPORTED X10CRNITI X10CRNITI18.9 STEEL WERE INVESTIGATED AFTER SOLUTION HEAT TREATMENT AND ANNEALING AT 500, 650 AND 750 C. THE METHODS USED WERE OPTICAL AND ELECTRON MICROSCOPY, X-RAY PHASE ANALYSIS AND X-RAY MICROANALYSIS. THE FOLLOWING INCLUSIONS WERE OBSERVED IN SOLUTION HEAT TREATED STEELS: IN OH18N9 STEEL NONMETALLIC OXIDE AND SULFIDE INCLUSIONS AND IN THE REMAINING TYPES OF STEELS ALSO CARBIDE, TIT...
Keywords: GAMMA RAYS; SOLAR FLARES; ELECTROMAGNETIC RADIATION; NUCLEI (NUCLEAR PHYSICS); PHOTONS; RADIO ASTRONOMY; X RAYS
Downloads: 143
[texts]Drive circuit for minimizing power consumption in inductive load Patent - Crawford, W. E
Automatic power supply circuit design for driving inductive loads and minimizing power consumption including solenoid example
Keywords: GALACTIC RADIATION; GAMMA RAYS; MILKY WAY GALAXY; BREMSSTRAHLUNG; COMPTON EFFECT; PHOTONS; RADIATION SOURCES; SYNCHROTRON RADIATION
Downloads: 96
[texts]Scaling Laws Applied to a Modal Formulation of the Aeroservoelastic Equations - Pototzky, Anthony S
A method of scaling is described that easily converts the aeroelastic equations of motion of a full-sized aircraft into ones of a wind-tunnel model. To implement the method, a set of rules is provided for the conversion process involving matrix operations with scale factors. In addition, a technique for analytically incorporating a spring mounting system into the aeroelastic equations is also presented...
Keywords: RAYLEIGH SCATTERING; DENSITY MEASUREMENT; CONTINUOUS WAVE LASERS; LIGHT SCATTERING; TEST FACILITIES; OPTICAL FIBERS; PLUMES; PHOTONS
Downloads: 102
[texts]Non-destructive evaluation of composites - Chu, Tsuchin Phili
The composite materials have been used in aerospace industries for quite some time. Several non-destructive evaluation (NDE) methods have been developed to inspect composites in order to detect flaws, matrix cracking, and delamination. These methods include ultrasonics, acoustic emission, shearography, thermography, X-ray, and digital image correlation. The NDE Branch of Marshall Space Flight Center has recently acquired a thermal imaging NDE system...
Keywords: CRYPTOGRAPHY; OPTICAL FIBERS; QUANTUM MECHANICS; QUANTUM THEORY; SECURITY; SCRAMBLING (COMMUNICATION); COMMUNICATION; MESSAGE PROCESSING; INFORMATION THEORY; PHOTONS
Downloads: 119
[texts]SeaWiFS Technical Report Series - NON
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) is the follow-on ocean color instrument to the Coastal Zone Color Scanner (CZCS), which ceased operations in 1986, after an eight-year mission. SeaWiFS is expected to be launched in 1996, on the SeaStar satellite, being built by Orbital Sciences Corporation (OSC). The SeaWiFS Project at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC), has undertaken the responsibility of documenting all aspects of thi...
Keywords: QUANTUM EFFICIENCY; FRANCK-CONDON PRINCIPLE; PHOTONS; LASERS; CRYPTOGRAPHY; OPTICAL PUMPING; MOLECULES
Downloads: 118
[texts]The establishment of NASA - Schoettle, E. C. B
No Abstract Available
Keywords: ATMOSPHERIC RADIATION; ELECTRON DENSITY (CONCENTRATION); PHOTONS; COSMIC RAY SHOWERS; MATHEMATICAL MODELS; PRIMARY COSMIC RAYS
Downloads: 133
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